Study on the Effect of Rainfall on Polarized Radar ISAR Imaging and Calibration Methods
Polarized inverse synthetic aperture radar(Pol-ISAR)is capable of all-weather,all-day and high-reso-lution imaging observation of targets,which is an important means of acquiring information about space targets.Howe-ver,the radio wave propagation effect under complex atmospheric environment may have a significant impact on the ima-ging results.The ISAR imaging model of fully polarized radar under complex rainfall conditions is established.The pola-rized electromagnetic wave amplitude attenuation and phase error caused by the propagation effect under rainfall environ-ment are analyzed.A method to calibrate the propagation effect on ISAR imaging is proposed,which provides important support for the fusion imaging of the multipolar channels.The experimental results verify the correctness of the ISAR ima-ging model and the effectiveness of the propagation effect calibration method under complex rainfall conditions.
万方数据
维普
